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b0f5e3fc | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
d86f531c | 15 | /* |
16 | $Id$ | |
d86f531c | 17 | */ |
04366a57 | 18 | /////////////////////////////////////////////////////////////////////////// |
19 | // Cluster finder // | |
20 | // for Silicon // | |
21 | // Drift Detector // | |
22 | ////////////////////////////////////////////////////////////////////////// | |
bf3f2830 | 23 | |
b0f5e3fc | 24 | |
25 | #include "AliITSClusterFinderSDD.h" | |
e8189707 | 26 | #include "AliITSMapA1.h" |
41b19549 | 27 | #include "AliITSRawClusterSDD.h" |
78a228db | 28 | #include "AliITSRecPoint.h" |
f77f13c8 | 29 | #include "AliITSdigitSDD.h" |
7d62fb64 | 30 | #include "AliITSDetTypeRec.h" |
fcf95fc7 | 31 | #include "AliITSCalibrationSDD.h" |
f77f13c8 | 32 | #include "AliITSsegmentationSDD.h" |
6cae184e | 33 | #include "AliITSgeom.h" |
f77f13c8 | 34 | #include "AliLog.h" |
b0f5e3fc | 35 | |
b0f5e3fc | 36 | ClassImp(AliITSClusterFinderSDD) |
37 | ||
aacedc3e | 38 | //______________________________________________________________________ |
39 | AliITSClusterFinderSDD::AliITSClusterFinderSDD(): | |
40 | AliITSClusterFinder(), | |
41 | fNclusters(0), | |
42 | fDAnode(0.0), | |
43 | fDTime(0.0), | |
44 | fTimeCorr(0.0), | |
45 | fCutAmplitude(0), | |
46 | fMinPeak(0), | |
47 | fMinCharge(0), | |
48 | fMinNCells(0), | |
49 | fMaxNCells(0){ | |
50 | // default constructor | |
51 | } | |
42da2935 | 52 | //______________________________________________________________________ |
8ba39da9 | 53 | AliITSClusterFinderSDD::AliITSClusterFinderSDD(AliITSDetTypeRec* dettyp, |
50d05d7b | 54 | TClonesArray *digits, |
aacedc3e | 55 | TClonesArray *recp): |
8ba39da9 | 56 | AliITSClusterFinder(dettyp), |
aacedc3e | 57 | fNclusters(0), |
58 | fDAnode(0.0), | |
59 | fDTime(0.0), | |
60 | fTimeCorr(0.0), | |
61 | fCutAmplitude(0), | |
62 | fMinPeak(0), | |
63 | fMinCharge(0), | |
64 | fMinNCells(0), | |
65 | fMaxNCells(0){ | |
42da2935 | 66 | // standard constructor |
78a228db | 67 | |
aacedc3e | 68 | SetDigits(digits); |
69 | SetClusters(recp); | |
8ba39da9 | 70 | SetCutAmplitude(fDetTypeRec->GetITSgeom()->GetStartSDD()); |
b0f5e3fc | 71 | SetDAnode(); |
72 | SetDTime(); | |
f45f6658 | 73 | SetMinPeak((Int_t)((AliITSCalibrationSDD*)GetResp(fDetTypeRec->GetITSgeom()->GetStartSDD()))->GetNoiseAfterElectronics(0)*5); |
78a228db | 74 | SetMinNCells(); |
75 | SetMaxNCells(); | |
76 | SetTimeCorr(); | |
a1f090e0 | 77 | SetMinCharge(); |
aacedc3e | 78 | SetMap(new AliITSMapA1(GetSeg(),Digits(),fCutAmplitude)); |
e8189707 | 79 | } |
42da2935 | 80 | //______________________________________________________________________ |
8ba39da9 | 81 | void AliITSClusterFinderSDD::SetCutAmplitude(Int_t mod,Double_t nsigma){ |
42da2935 | 82 | // set the signal threshold for cluster finder |
f45f6658 | 83 | Double_t baseline,noiseAfterEl; |
42da2935 | 84 | |
0599a018 | 85 | AliITSresponseSDD* res = (AliITSresponseSDD*)((AliITSCalibrationSDD*)GetResp(mod))->GetResponse(); |
86 | const char *option=res->ZeroSuppOption(); | |
f45f6658 | 87 | Int_t nanodes = GetResp(mod)->Wings()*GetResp(mod)->Channels()*GetResp(mod)->Chips(); |
88 | fCutAmplitude.Set(nanodes); | |
89 | for(Int_t ian=0;ian<nanodes;ian++){ | |
f45f6658 | 90 | noiseAfterEl = ((AliITSCalibrationSDD*)GetResp(mod))->GetNoiseAfterElectronics(ian); |
20f3f947 | 91 | if(strstr(option,"ZS")){ |
0599a018 | 92 | fCutAmplitude[ian] = (Int_t)(nsigma*noiseAfterEl); |
93 | } | |
94 | else{ | |
95 | baseline=GetResp(mod)->GetBaseline(ian); | |
96 | fCutAmplitude[ian] = (Int_t)((baseline + nsigma*noiseAfterEl)); | |
97 | } | |
f45f6658 | 98 | } |
5dd4cc39 | 99 | } |
42da2935 | 100 | //______________________________________________________________________ |
101 | void AliITSClusterFinderSDD::Find1DClusters(){ | |
102 | // find 1D clusters | |
a1f090e0 | 103 | |
42da2935 | 104 | // retrieve the parameters |
aacedc3e | 105 | Int_t fNofMaps = GetSeg()->Npz(); |
106 | Int_t fMaxNofSamples = GetSeg()->Npx(); | |
b48af428 | 107 | Int_t fNofAnodes = fNofMaps/2; |
108 | Int_t dummy = 0; | |
aacedc3e | 109 | Double_t fTimeStep = GetSeg()->Dpx(dummy); |
110 | Double_t fSddLength = GetSeg()->Dx(); | |
404c1c29 | 111 | AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule); |
0599a018 | 112 | AliITSresponseSDD* res = (AliITSresponseSDD*)((AliITSCalibrationSDD*)GetResp(fModule))->GetResponse(); |
113 | const char *option=res->ZeroSuppOption(); | |
114 | ||
42da2935 | 115 | // map the signal |
aacedc3e | 116 | Map()->ClearMap(); |
f45f6658 | 117 | Map()->SetThresholdArr(fCutAmplitude); |
118 | Map()->FillMap2(); | |
a1f090e0 | 119 | |
42da2935 | 120 | Int_t nofFoundClusters = 0; |
121 | Int_t i; | |
aacedc3e | 122 | Double_t **dfadc = new Double_t*[fNofAnodes]; |
123 | for(i=0;i<fNofAnodes;i++) dfadc[i] = new Double_t[fMaxNofSamples]; | |
124 | Double_t fadc = 0.; | |
125 | Double_t fadc1 = 0.; | |
126 | Double_t fadc2 = 0.; | |
42da2935 | 127 | Int_t j,k,idx,l,m; |
128 | for(j=0;j<2;j++) { | |
50d05d7b | 129 | for(k=0;k<fNofAnodes;k++) { |
130 | idx = j*fNofAnodes+k; | |
131 | // signal (fadc) & derivative (dfadc) | |
132 | dfadc[k][255]=0.; | |
133 | for(l=0; l<fMaxNofSamples; l++) { | |
aacedc3e | 134 | fadc2=(Double_t)Map()->GetSignal(idx,l); |
135 | if(l>0) fadc1=(Double_t)Map()->GetSignal(idx,l-1); | |
50d05d7b | 136 | if(l>0) dfadc[k][l-1] = fadc2-fadc1; |
137 | } // samples | |
138 | } // anodes | |
42da2935 | 139 | |
50d05d7b | 140 | for(k=0;k<fNofAnodes;k++) { |
f77f13c8 | 141 | AliDebug(5,Form("Anode: %d, Wing: %d",k+1,j+1)); |
50d05d7b | 142 | idx = j*fNofAnodes+k; |
143 | Int_t imax = 0; | |
144 | Int_t imaxd = 0; | |
145 | Int_t it = 0; | |
146 | while(it <= fMaxNofSamples-3) { | |
147 | imax = it; | |
148 | imaxd = it; | |
149 | // maximum of signal | |
aacedc3e | 150 | Double_t fadcmax = 0.; |
151 | Double_t dfadcmax = 0.; | |
50d05d7b | 152 | Int_t lthrmina = 1; |
153 | Int_t lthrmint = 3; | |
154 | Int_t lthra = 1; | |
155 | Int_t lthrt = 0; | |
156 | for(m=0;m<20;m++) { | |
157 | Int_t id = it+m; | |
158 | if(id>=fMaxNofSamples) break; | |
aacedc3e | 159 | fadc=(float)Map()->GetSignal(idx,id); |
50d05d7b | 160 | if(fadc > fadcmax) { fadcmax = fadc; imax = id;} |
f45f6658 | 161 | if(fadc > (float)fCutAmplitude[idx])lthrt++; |
50d05d7b | 162 | if(dfadc[k][id] > dfadcmax) { |
163 | dfadcmax = dfadc[k][id]; | |
164 | imaxd = id; | |
165 | } // end if | |
166 | } // end for m | |
167 | it = imaxd; | |
aacedc3e | 168 | if(Map()->TestHit(idx,imax) == kEmpty) {it++; continue;} |
50d05d7b | 169 | // cluster charge |
170 | Int_t tstart = it-2; | |
171 | if(tstart < 0) tstart = 0; | |
172 | Bool_t ilcl = 0; | |
173 | if(lthrt >= lthrmint && lthra >= lthrmina) ilcl = 1; | |
174 | if(ilcl) { | |
175 | nofFoundClusters++; | |
176 | Int_t tstop = tstart; | |
aacedc3e | 177 | Double_t dfadcmin = 10000.; |
50d05d7b | 178 | Int_t ij; |
179 | for(ij=0; ij<20; ij++) { | |
180 | if(tstart+ij > 255) { tstop = 255; break; } | |
aacedc3e | 181 | fadc=(float)Map()->GetSignal(idx,tstart+ij); |
50d05d7b | 182 | if((dfadc[k][tstart+ij] < dfadcmin) && |
f45f6658 | 183 | (fadc > fCutAmplitude[idx])) { |
50d05d7b | 184 | tstop = tstart+ij+5; |
185 | if(tstop > 255) tstop = 255; | |
186 | dfadcmin = dfadc[k][it+ij]; | |
187 | } // end if | |
188 | } // end for ij | |
42da2935 | 189 | |
aacedc3e | 190 | Double_t clusterCharge = 0.; |
191 | Double_t clusterAnode = k+0.5; | |
192 | Double_t clusterTime = 0.; | |
50d05d7b | 193 | Int_t clusterMult = 0; |
aacedc3e | 194 | Double_t clusterPeakAmplitude = 0.; |
50d05d7b | 195 | Int_t its,peakpos = -1; |
0599a018 | 196 | |
f45f6658 | 197 | for(its=tstart; its<=tstop; its++) { |
aacedc3e | 198 | fadc=(float)Map()->GetSignal(idx,its); |
20f3f947 | 199 | if(!(strstr(option,"ZS"))){ |
0599a018 | 200 | Double_t baseline=GetResp(fModule)->GetBaseline(idx); |
201 | if(fadc>baseline) fadc -= baseline; | |
202 | else fadc = 0.; | |
203 | } | |
50d05d7b | 204 | clusterCharge += fadc; |
205 | // as a matter of fact we should take the peak | |
206 | // pos before FFT | |
207 | // to get the list of tracks !!! | |
208 | if(fadc > clusterPeakAmplitude) { | |
209 | clusterPeakAmplitude = fadc; | |
aacedc3e | 210 | //peakpos=Map()->GetHitIndex(idx,its); |
50d05d7b | 211 | Int_t shift = (int)(fTimeCorr/fTimeStep); |
212 | if(its>shift && its<(fMaxNofSamples-shift)) | |
aacedc3e | 213 | peakpos = Map()->GetHitIndex(idx,its+shift); |
214 | else peakpos = Map()->GetHitIndex(idx,its); | |
215 | if(peakpos<0) peakpos =Map()->GetHitIndex(idx,its); | |
50d05d7b | 216 | } // end if |
217 | clusterTime += fadc*its; | |
218 | if(fadc > 0) clusterMult++; | |
219 | if(its == tstop) { | |
220 | clusterTime /= (clusterCharge/fTimeStep); // ns | |
221 | if(clusterTime>fTimeCorr) clusterTime -=fTimeCorr; | |
222 | //ns | |
223 | } // end if | |
224 | } // end for its | |
f6b6d58e | 225 | Float_t theAnode=clusterAnode+j*fNofAnodes; |
226 | Double_t clusteranodePath = GetSeg()->GetLocalZFromAnode(theAnode); | |
404c1c29 | 227 | Double_t clusterDriftPath = (Double_t)cal->GetDriftPath(clusterTime,clusteranodePath); |
50d05d7b | 228 | clusterDriftPath = fSddLength-clusterDriftPath; |
229 | if(clusterCharge <= 0.) break; | |
230 | AliITSRawClusterSDD clust(j+1,//i | |
231 | clusterAnode,clusterTime,//ff | |
232 | clusterCharge, //f | |
233 | clusterPeakAmplitude, //f | |
234 | peakpos, //i | |
235 | 0.,0.,clusterDriftPath,//fff | |
236 | clusteranodePath, //f | |
237 | clusterMult, //i | |
238 | 0,0,0,0,0,0,0);//7*i | |
7d62fb64 | 239 | fDetTypeRec->AddCluster(1,&clust); |
50d05d7b | 240 | it = tstop; |
241 | } // ilcl | |
242 | it++; | |
243 | } // while (samples) | |
244 | } // anodes | |
42da2935 | 245 | } // detectors (2) |
42da2935 | 246 | |
247 | for(i=0;i<fNofAnodes;i++) delete[] dfadc[i]; | |
248 | delete [] dfadc; | |
a1f090e0 | 249 | |
42da2935 | 250 | return; |
a1f090e0 | 251 | } |
42da2935 | 252 | //______________________________________________________________________ |
253 | void AliITSClusterFinderSDD::Find1DClustersE(){ | |
24a1c341 | 254 | // find 1D clusters |
42da2935 | 255 | // retrieve the parameters |
aacedc3e | 256 | Int_t fNofMaps = GetSeg()->Npz(); |
257 | Int_t fMaxNofSamples = GetSeg()->Npx(); | |
42da2935 | 258 | Int_t fNofAnodes = fNofMaps/2; |
259 | Int_t dummy=0; | |
aacedc3e | 260 | Double_t fTimeStep = GetSeg()->Dpx( dummy ); |
261 | Double_t fSddLength = GetSeg()->Dx(); | |
404c1c29 | 262 | AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule); |
aacedc3e | 263 | Map()->ClearMap(); |
f45f6658 | 264 | Map()->SetThresholdArr( fCutAmplitude ); |
265 | Map()->FillMap2(); | |
fcf95fc7 | 266 | |
0599a018 | 267 | AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse(); |
268 | const char *option=res->ZeroSuppOption(); | |
269 | ||
42da2935 | 270 | Int_t nClu = 0; |
50d05d7b | 271 | // cout << "Search cluster... "<< endl; |
42da2935 | 272 | for( Int_t j=0; j<2; j++ ){ |
50d05d7b | 273 | for( Int_t k=0; k<fNofAnodes; k++ ){ |
0599a018 | 274 | Int_t idx = j*fNofAnodes+k; |
50d05d7b | 275 | Bool_t on = kFALSE; |
276 | Int_t start = 0; | |
277 | Int_t nTsteps = 0; | |
aacedc3e | 278 | Double_t fmax = 0.; |
50d05d7b | 279 | Int_t lmax = 0; |
aacedc3e | 280 | Double_t charge = 0.; |
281 | Double_t time = 0.; | |
282 | Double_t anode = k+0.5; | |
50d05d7b | 283 | Int_t peakpos = -1; |
284 | for( Int_t l=0; l<fMaxNofSamples; l++ ){ | |
aacedc3e | 285 | Double_t fadc = (Double_t)Map()->GetSignal( idx, l ); |
50d05d7b | 286 | if( fadc > 0.0 ){ |
287 | if( on == kFALSE && l<fMaxNofSamples-4){ | |
288 | // star RawCluster (reset var.) | |
aacedc3e | 289 | Double_t fadc1 = (Double_t)Map()->GetSignal( idx, l+1 ); |
50d05d7b | 290 | if( fadc1 < fadc ) continue; |
291 | start = l; | |
292 | fmax = 0.; | |
293 | lmax = 0; | |
294 | time = 0.; | |
295 | charge = 0.; | |
296 | on = kTRUE; | |
297 | nTsteps = 0; | |
298 | } // end if on... | |
299 | nTsteps++ ; | |
20f3f947 | 300 | if(!(strstr(option,"ZS"))){ |
0599a018 | 301 | Double_t baseline=GetResp(fModule)->GetBaseline(idx); |
302 | if( fadc > baseline ) fadc -= baseline; | |
303 | else fadc=0.; | |
304 | } | |
50d05d7b | 305 | charge += fadc; |
306 | time += fadc*l; | |
307 | if( fadc > fmax ){ | |
308 | fmax = fadc; | |
309 | lmax = l; | |
310 | Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5); | |
311 | if( l > shift && l < (fMaxNofSamples-shift) ) | |
aacedc3e | 312 | peakpos = Map()->GetHitIndex( idx, l+shift ); |
50d05d7b | 313 | else |
aacedc3e | 314 | peakpos = Map()->GetHitIndex( idx, l ); |
315 | if( peakpos < 0) peakpos = Map()->GetHitIndex(idx,l); | |
50d05d7b | 316 | } // end if fadc |
317 | }else{ // end fadc>0 | |
318 | if( on == kTRUE ){ | |
319 | if( nTsteps > 2 ){ | |
320 | // min # of timesteps for a RawCluster | |
321 | // Found a RawCluster... | |
322 | Int_t stop = l-1; | |
323 | time /= (charge/fTimeStep); // ns | |
324 | // time = lmax*fTimeStep; // ns | |
325 | if( time > fTimeCorr ) time -= fTimeCorr; // ns | |
f6b6d58e | 326 | Float_t theAnode=anode+j*fNofAnodes; |
327 | Double_t anodePath =GetSeg()->GetLocalZFromAnode(theAnode); | |
4952f440 | 328 | Double_t driftPath = (Double_t)cal->GetDriftPath(time,anode); |
50d05d7b | 329 | driftPath = fSddLength-driftPath; |
330 | AliITSRawClusterSDD clust(j+1,anode,time,charge, | |
331 | fmax, peakpos,0.,0., | |
332 | driftPath,anodePath, | |
333 | nTsteps,start,stop, | |
334 | start, stop, 1, k, k ); | |
7d62fb64 | 335 | fDetTypeRec->AddCluster( 1, &clust ); |
f77f13c8 | 336 | if(AliDebugLevel()>=5) clust.PrintInfo(); |
50d05d7b | 337 | nClu++; |
338 | } // end if nTsteps | |
339 | on = kFALSE; | |
340 | } // end if on==kTRUE | |
341 | } // end if fadc>0 | |
342 | } // samples | |
343 | } // anodes | |
42da2935 | 344 | } // wings |
f77f13c8 | 345 | AliDebug(3,Form("# Rawclusters %d",nClu)); |
42da2935 | 346 | return; |
a1f090e0 | 347 | } |
42da2935 | 348 | //_______________________________________________________________________ |
aacedc3e | 349 | Int_t AliITSClusterFinderSDD::SearchPeak(Double_t *spect,Int_t xdim,Int_t zdim, |
50d05d7b | 350 | Int_t *peakX, Int_t *peakZ, |
aacedc3e | 351 | Double_t *peakAmp, Double_t minpeak ){ |
42da2935 | 352 | // search peaks on a 2D cluster |
353 | Int_t npeak = 0; // # peaks | |
56fff130 | 354 | Int_t i,j; |
42da2935 | 355 | // search peaks |
356 | for( Int_t z=1; z<zdim-1; z++ ){ | |
48058160 | 357 | for( Int_t x=1; x<xdim-2; x++ ){ |
aacedc3e | 358 | Double_t sxz = spect[x*zdim+z]; |
359 | Double_t sxz1 = spect[(x+1)*zdim+z]; | |
360 | Double_t sxz2 = spect[(x-1)*zdim+z]; | |
50d05d7b | 361 | // search a local max. in s[x,z] |
362 | if( sxz < minpeak || sxz1 <= 0 || sxz2 <= 0 ) continue; | |
363 | if( sxz >= spect[(x+1)*zdim+z ] && sxz >= spect[(x-1)*zdim+z ] && | |
364 | sxz >= spect[x*zdim +z+1] && sxz >= spect[x*zdim +z-1] && | |
365 | sxz >= spect[(x+1)*zdim+z+1] && sxz >= spect[(x+1)*zdim+z-1] && | |
366 | sxz >= spect[(x-1)*zdim+z+1] && sxz >= spect[(x-1)*zdim+z-1] ){ | |
367 | // peak found | |
368 | peakX[npeak] = x; | |
369 | peakZ[npeak] = z; | |
370 | peakAmp[npeak] = sxz; | |
371 | npeak++; | |
372 | } // end if .... | |
373 | } // end for x | |
42da2935 | 374 | } // end for z |
375 | // search groups of peaks with same amplitude. | |
376 | Int_t *flag = new Int_t[npeak]; | |
377 | for( i=0; i<npeak; i++ ) flag[i] = 0; | |
378 | for( i=0; i<npeak; i++ ){ | |
50d05d7b | 379 | for( j=0; j<npeak; j++ ){ |
380 | if( i==j) continue; | |
381 | if( flag[j] > 0 ) continue; | |
382 | if( peakAmp[i] == peakAmp[j] && | |
383 | TMath::Abs(peakX[i]-peakX[j])<=1 && | |
384 | TMath::Abs(peakZ[i]-peakZ[j])<=1 ){ | |
385 | if( flag[i] == 0) flag[i] = i+1; | |
386 | flag[j] = flag[i]; | |
387 | } // end if ... | |
388 | } // end for j | |
42da2935 | 389 | } // end for i |
50d05d7b | 390 | // make average of peak groups |
42da2935 | 391 | for( i=0; i<npeak; i++ ){ |
50d05d7b | 392 | Int_t nFlag = 1; |
393 | if( flag[i] <= 0 ) continue; | |
394 | for( j=0; j<npeak; j++ ){ | |
395 | if( i==j ) continue; | |
396 | if( flag[j] != flag[i] ) continue; | |
397 | peakX[i] += peakX[j]; | |
398 | peakZ[i] += peakZ[j]; | |
399 | nFlag++; | |
400 | npeak--; | |
401 | for( Int_t k=j; k<npeak; k++ ){ | |
402 | peakX[k] = peakX[k+1]; | |
403 | peakZ[k] = peakZ[k+1]; | |
404 | peakAmp[k] = peakAmp[k+1]; | |
405 | flag[k] = flag[k+1]; | |
406 | } // end for k | |
407 | j--; | |
408 | } // end for j | |
409 | if( nFlag > 1 ){ | |
410 | peakX[i] /= nFlag; | |
411 | peakZ[i] /= nFlag; | |
412 | } // end fi nFlag | |
42da2935 | 413 | } // end for i |
414 | delete [] flag; | |
415 | return( npeak ); | |
a1f090e0 | 416 | } |
42da2935 | 417 | //______________________________________________________________________ |
aacedc3e | 418 | void AliITSClusterFinderSDD::PeakFunc( Int_t xdim, Int_t zdim, Double_t *par, |
419 | Double_t *spe, Double_t *integral){ | |
24a1c341 | 420 | // function used to fit the clusters |
50d05d7b | 421 | // par -> parameters.. |
24a1c341 | 422 | // par[0] number of peaks. |
423 | // for each peak i=1, ..., par[0] | |
50d05d7b | 424 | // par[i] = Ampl. |
425 | // par[i+1] = xpos | |
426 | // par[i+2] = zpos | |
427 | // par[i+3] = tau | |
428 | // par[i+4] = sigma. | |
cd2a0045 | 429 | Int_t electronics = 1; // 1 = PASCAL, 2 = OLA |
24a1c341 | 430 | const Int_t knParam = 5; |
431 | Int_t npeak = (Int_t)par[0]; | |
42da2935 | 432 | |
aacedc3e | 433 | memset( spe, 0, sizeof( Double_t )*zdim*xdim ); |
42da2935 | 434 | |
24a1c341 | 435 | Int_t k = 1; |
42da2935 | 436 | for( Int_t i=0; i<npeak; i++ ){ |
24a1c341 | 437 | if( integral != 0 ) integral[i] = 0.; |
aacedc3e | 438 | Double_t sigmaA2 = par[k+4]*par[k+4]*2.; |
439 | Double_t t2 = par[k+3]; // PASCAL | |
bf3f2830 | 440 | if( electronics == 2 ) { t2 *= t2; t2 *= 2; } // OLA |
42da2935 | 441 | for( Int_t z=0; z<zdim; z++ ){ |
442 | for( Int_t x=0; x<xdim; x++ ){ | |
aacedc3e | 443 | Double_t z2 = (z-par[k+2])*(z-par[k+2])/sigmaA2; |
444 | Double_t x2 = 0.; | |
445 | Double_t signal = 0.; | |
42da2935 | 446 | if( electronics == 1 ){ // PASCAL |
bf3f2830 | 447 | x2 = (x-par[k+1]+t2)/t2; |
42da2935 | 448 | signal = (x2>0.) ? par[k]*x2*exp(-x2+1.-z2) :0.0; // RCCR2 |
449 | // signal =(x2>0.) ? par[k]*x2*x2*exp(-2*x2+2.-z2 ):0.0;//RCCR | |
450 | }else if( electronics == 2 ) { // OLA | |
bf3f2830 | 451 | x2 = (x-par[k+1])*(x-par[k+1])/t2; |
50d05d7b | 452 | signal = par[k] * exp( -x2 - z2 ); |
453 | } else { | |
aacedc3e | 454 | Warning("PeakFunc","Wrong SDD Electronics = %d", |
455 | electronics); | |
50d05d7b | 456 | // exit( 1 ); |
457 | } // end if electronicx | |
24a1c341 | 458 | spe[x*zdim+z] += signal; |
459 | if( integral != 0 ) integral[i] += signal; | |
42da2935 | 460 | } // end for x |
461 | } // end for z | |
24a1c341 | 462 | k += knParam; |
42da2935 | 463 | } // end for i |
24a1c341 | 464 | return; |
a1f090e0 | 465 | } |
42da2935 | 466 | //__________________________________________________________________________ |
aacedc3e | 467 | Double_t AliITSClusterFinderSDD::ChiSqr( Int_t xdim, Int_t zdim, Double_t *spe, |
468 | Double_t *speFit ) const{ | |
42da2935 | 469 | // EVALUATES UNNORMALIZED CHI-SQUARED |
aacedc3e | 470 | Double_t chi2 = 0.; |
42da2935 | 471 | for( Int_t z=0; z<zdim; z++ ){ |
50d05d7b | 472 | for( Int_t x=1; x<xdim-1; x++ ){ |
473 | Int_t index = x*zdim+z; | |
aacedc3e | 474 | Double_t tmp = spe[index] - speFit[index]; |
50d05d7b | 475 | chi2 += tmp*tmp; |
476 | } // end for x | |
42da2935 | 477 | } // end for z |
478 | return( chi2 ); | |
a1f090e0 | 479 | } |
42da2935 | 480 | //_______________________________________________________________________ |
aacedc3e | 481 | void AliITSClusterFinderSDD::Minim( Int_t xdim, Int_t zdim, Double_t *param, |
482 | Double_t *prm0,Double_t *steprm, | |
483 | Double_t *chisqr,Double_t *spe, | |
484 | Double_t *speFit ){ | |
42da2935 | 485 | // |
486 | Int_t k, nnn, mmm, i; | |
aacedc3e | 487 | Double_t p1, delta, d1, chisq1, p2, chisq2, t, p3, chisq3, a, b, p0, chisqt; |
42da2935 | 488 | const Int_t knParam = 5; |
489 | Int_t npeak = (Int_t)param[0]; | |
490 | for( k=1; k<(npeak*knParam+1); k++ ) prm0[k] = param[k]; | |
491 | for( k=1; k<(npeak*knParam+1); k++ ){ | |
50d05d7b | 492 | p1 = param[k]; |
493 | delta = steprm[k]; | |
494 | d1 = delta; | |
495 | // ENSURE THAT STEP SIZE IS SENSIBLY LARGER THAN MACHINE ROUND OFF | |
f4b7cee4 | 496 | if( TMath::Abs( p1 ) > 1.0E-6 ) |
497 | if ( TMath::Abs( delta/p1 ) < 1.0E-4 ) delta = p1/1000; | |
aacedc3e | 498 | else delta = (Double_t)1.0E-4; |
50d05d7b | 499 | // EVALUATE CHI-SQUARED AT FIRST TWO SEARCH POINTS |
500 | PeakFunc( xdim, zdim, param, speFit ); | |
501 | chisq1 = ChiSqr( xdim, zdim, spe, speFit ); | |
502 | p2 = p1+delta; | |
503 | param[k] = p2; | |
504 | PeakFunc( xdim, zdim, param, speFit ); | |
505 | chisq2 = ChiSqr( xdim, zdim, spe, speFit ); | |
506 | if( chisq1 < chisq2 ){ | |
507 | // REVERSE DIRECTION OF SEARCH IF CHI-SQUARED IS INCREASING | |
508 | delta = -delta; | |
509 | t = p1; | |
510 | p1 = p2; | |
511 | p2 = t; | |
512 | t = chisq1; | |
513 | chisq1 = chisq2; | |
514 | chisq2 = t; | |
515 | } // end if | |
516 | i = 1; nnn = 0; | |
517 | do { // INCREMENT param(K) UNTIL CHI-SQUARED STARTS TO INCREASE | |
518 | nnn++; | |
519 | p3 = p2 + delta; | |
520 | mmm = nnn - (nnn/5)*5; // multiplo de 5 | |
521 | if( mmm == 0 ){ | |
522 | d1 = delta; | |
523 | // INCREASE STEP SIZE IF STEPPING TOWARDS MINIMUM IS TOO SLOW | |
524 | delta *= 5; | |
525 | } // end if | |
526 | param[k] = p3; | |
527 | // Constrain paramiters | |
528 | Int_t kpos = (k-1) % knParam; | |
529 | switch( kpos ){ | |
530 | case 0 : | |
531 | if( param[k] <= 20 ) param[k] = fMinPeak; | |
532 | break; | |
533 | case 1 : | |
f4b7cee4 | 534 | if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k]; |
50d05d7b | 535 | break; |
536 | case 2 : | |
f4b7cee4 | 537 | if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k]; |
50d05d7b | 538 | break; |
539 | case 3 : | |
540 | if( param[k] < .5 ) param[k] = .5; | |
541 | break; | |
542 | case 4 : | |
aacedc3e | 543 | if( param[k] < .288 ) param[k] = .288;// 1/sqrt(12) = 0.288 |
50d05d7b | 544 | if( param[k] > zdim*.5 ) param[k] = zdim*.5; |
545 | break; | |
546 | }; // end switch | |
547 | PeakFunc( xdim, zdim, param, speFit ); | |
548 | chisq3 = ChiSqr( xdim, zdim, spe, speFit ); | |
549 | if( chisq3 < chisq2 && nnn < 50 ){ | |
550 | p1 = p2; | |
551 | p2 = p3; | |
552 | chisq1 = chisq2; | |
553 | chisq2 = chisq3; | |
554 | }else i=0; | |
555 | } while( i ); | |
556 | // FIND MINIMUM OF PARABOLA DEFINED BY LAST THREE POINTS | |
557 | a = chisq1*(p2-p3)+chisq2*(p3-p1)+chisq3*(p1-p2); | |
558 | b = chisq1*(p2*p2-p3*p3)+chisq2*(p3*p3-p1*p1)+chisq3*(p1*p1-p2*p2); | |
aacedc3e | 559 | if( a!=0 ) p0 = (Double_t)(0.5*b/a); |
50d05d7b | 560 | else p0 = 10000; |
561 | //--IN CASE OF NEARLY EQUAL CHI-SQUARED AND TOO SMALL STEP SIZE PREVENT | |
562 | // ERRONEOUS EVALUATION OF PARABOLA MINIMUM | |
563 | //---NEXT TWO LINES CAN BE OMITTED FOR HIGHER PRECISION MACHINES | |
f4b7cee4 | 564 | //dp = (Double_t) max (TMath::Abs(p3-p2), TMath::Abs(p2-p1)); |
565 | //if( TMath::Abs( p2-p0 ) > dp ) p0 = p2; | |
50d05d7b | 566 | param[k] = p0; |
567 | // Constrain paramiters | |
568 | Int_t kpos = (k-1) % knParam; | |
569 | switch( kpos ){ | |
570 | case 0 : | |
571 | if( param[k] <= 20 ) param[k] = fMinPeak; | |
572 | break; | |
573 | case 1 : | |
f4b7cee4 | 574 | if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k]; |
50d05d7b | 575 | break; |
576 | case 2 : | |
f4b7cee4 | 577 | if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k]; |
50d05d7b | 578 | break; |
579 | case 3 : | |
580 | if( param[k] < .5 ) param[k] = .5; | |
581 | break; | |
582 | case 4 : | |
583 | if( param[k] < .288 ) param[k] = .288; // 1/sqrt(12) = 0.288 | |
584 | if( param[k] > zdim*.5 ) param[k] = zdim*.5; | |
585 | break; | |
586 | }; // end switch | |
587 | PeakFunc( xdim, zdim, param, speFit ); | |
588 | chisqt = ChiSqr( xdim, zdim, spe, speFit ); | |
589 | // DO NOT ALLOW ERRONEOUS INTERPOLATION | |
590 | if( chisqt <= *chisqr ) *chisqr = chisqt; | |
591 | else param[k] = prm0[k]; | |
592 | // OPTIMIZE SEARCH STEP FOR EVENTUAL NEXT CALL OF MINIM | |
593 | steprm[k] = (param[k]-prm0[k])/5; | |
594 | if( steprm[k] >= d1 ) steprm[k] = d1/5; | |
42da2935 | 595 | } // end for k |
596 | // EVALUATE FIT AND CHI-SQUARED FOR OPTIMIZED PARAMETERS | |
597 | PeakFunc( xdim, zdim, param, speFit ); | |
598 | *chisqr = ChiSqr( xdim, zdim, spe, speFit ); | |
599 | return; | |
a1f090e0 | 600 | } |
42da2935 | 601 | //_________________________________________________________________________ |
602 | Int_t AliITSClusterFinderSDD::NoLinearFit( Int_t xdim, Int_t zdim, | |
aacedc3e | 603 | Double_t *param, Double_t *spe, |
604 | Int_t *niter, Double_t *chir ){ | |
42da2935 | 605 | // fit method from Comput. Phys. Commun 46(1987) 149 |
aacedc3e | 606 | const Double_t kchilmt = 0.01; // relative accuracy |
50d05d7b | 607 | const Int_t knel = 3; // for parabolic minimization |
608 | const Int_t knstop = 50; // Max. iteration number | |
42da2935 | 609 | const Int_t knParam = 5; |
610 | Int_t npeak = (Int_t)param[0]; | |
611 | // RETURN IF NUMBER OF DEGREES OF FREEDOM IS NOT POSITIVE | |
612 | if( (xdim*zdim - npeak*knParam) <= 0 ) return( -1 ); | |
aacedc3e | 613 | Double_t degFree = (xdim*zdim - npeak*knParam)-1; |
42da2935 | 614 | Int_t n, k, iterNum = 0; |
aacedc3e | 615 | Double_t *prm0 = new Double_t[npeak*knParam+1]; |
616 | Double_t *step = new Double_t[npeak*knParam+1]; | |
617 | Double_t *schi = new Double_t[npeak*knParam+1]; | |
618 | Double_t *sprm[3]; | |
619 | sprm[0] = new Double_t[npeak*knParam+1]; | |
620 | sprm[1] = new Double_t[npeak*knParam+1]; | |
621 | sprm[2] = new Double_t[npeak*knParam+1]; | |
622 | Double_t chi0, chi1, reldif, a, b, prmin, dp; | |
623 | Double_t *speFit = new Double_t[ xdim*zdim ]; | |
42da2935 | 624 | PeakFunc( xdim, zdim, param, speFit ); |
625 | chi0 = ChiSqr( xdim, zdim, spe, speFit ); | |
626 | chi1 = chi0; | |
627 | for( k=1; k<(npeak*knParam+1); k++) prm0[k] = param[k]; | |
50d05d7b | 628 | for( k=1 ; k<(npeak*knParam+1); k+=knParam ){ |
629 | step[k] = param[k] / 20.0 ; | |
630 | step[k+1] = param[k+1] / 50.0; | |
631 | step[k+2] = param[k+2] / 50.0; | |
632 | step[k+3] = param[k+3] / 20.0; | |
633 | step[k+4] = param[k+4] / 20.0; | |
634 | } // end for k | |
42da2935 | 635 | Int_t out = 0; |
636 | do{ | |
50d05d7b | 637 | iterNum++; |
638 | chi0 = chi1; | |
639 | Minim( xdim, zdim, param, prm0, step, &chi1, spe, speFit ); | |
f4b7cee4 | 640 | reldif = ( chi1 > 0 ) ? ((Double_t) TMath::Abs( chi1-chi0)/chi1 ) : 0; |
50d05d7b | 641 | // EXIT conditions |
642 | if( reldif < (float) kchilmt ){ | |
643 | *chir = (chi1>0) ? (float) TMath::Sqrt (chi1/degFree) :0; | |
644 | *niter = iterNum; | |
645 | out = 0; | |
646 | break; | |
647 | } // end if | |
648 | if( (reldif < (float)(5*kchilmt)) && (iterNum > knstop) ){ | |
649 | *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0; | |
650 | *niter = iterNum; | |
651 | out = 0; | |
652 | break; | |
653 | } // end if | |
654 | if( iterNum > 5*knstop ){ | |
655 | *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0; | |
656 | *niter = iterNum; | |
657 | out = 1; | |
658 | break; | |
659 | } // end if | |
660 | if( iterNum <= knel ) continue; | |
661 | n = iterNum - (iterNum/knel)*knel; // EXTRAPOLATION LIMIT COUNTER N | |
662 | if( n > 3 || n == 0 ) continue; | |
663 | schi[n-1] = chi1; | |
664 | for( k=1; k<(npeak*knParam+1); k++ ) sprm[n-1][k] = param[k]; | |
665 | if( n != 3 ) continue; | |
666 | // -EVALUATE EXTRAPOLATED VALUE OF EACH PARAMETER BY FINDING MINIMUM OF | |
667 | // PARABOLA DEFINED BY LAST THREE CALLS OF MINIM | |
668 | for( k=1; k<(npeak*knParam+1); k++ ){ | |
aacedc3e | 669 | Double_t tmp0 = sprm[0][k]; |
670 | Double_t tmp1 = sprm[1][k]; | |
671 | Double_t tmp2 = sprm[2][k]; | |
50d05d7b | 672 | a = schi[0]*(tmp1-tmp2) + schi[1]*(tmp2-tmp0); |
673 | a += (schi[2]*(tmp0-tmp1)); | |
674 | b = schi[0]*(tmp1*tmp1-tmp2*tmp2); | |
675 | b += (schi[1]*(tmp2*tmp2-tmp0*tmp0)+(schi[2]* | |
676 | (tmp0*tmp0-tmp1*tmp1))); | |
677 | if ((double)a < 1.0E-6) prmin = 0; | |
678 | else prmin = (float) (0.5*b/a); | |
679 | dp = 5*(tmp2-tmp0); | |
f4b7cee4 | 680 | if( TMath::Abs(prmin-tmp2) > TMath::Abs(dp) ) prmin = tmp2+dp; |
50d05d7b | 681 | param[k] = prmin; |
682 | step[k] = dp/10; // OPTIMIZE SEARCH STEP | |
683 | } // end for k | |
42da2935 | 684 | } while( kTRUE ); |
685 | delete [] prm0; | |
686 | delete [] step; | |
687 | delete [] schi; | |
688 | delete [] sprm[0]; | |
689 | delete [] sprm[1]; | |
690 | delete [] sprm[2]; | |
691 | delete [] speFit; | |
692 | return( out ); | |
a1f090e0 | 693 | } |
50d05d7b | 694 | |
42da2935 | 695 | //______________________________________________________________________ |
04366a57 | 696 | void AliITSClusterFinderSDD::ResolveClusters(){ |
42da2935 | 697 | // The function to resolve clusters if the clusters overlapping exists |
24a1c341 | 698 | Int_t i; |
42da2935 | 699 | // get number of clusters for this module |
aacedc3e | 700 | Int_t nofClusters = NClusters(); |
42da2935 | 701 | nofClusters -= fNclusters; |
aacedc3e | 702 | Int_t fNofMaps = GetSeg()->Npz(); |
42da2935 | 703 | Int_t fNofAnodes = fNofMaps/2; |
aacedc3e | 704 | //Int_t fMaxNofSamples = GetSeg()->Npx(); |
42da2935 | 705 | Int_t dummy=0; |
aacedc3e | 706 | Double_t fTimeStep = GetSeg()->Dpx( dummy ); |
707 | Double_t fSddLength = GetSeg()->Dx(); | |
aacedc3e | 708 | Double_t anodePitch = GetSeg()->Dpz( dummy ); |
cd2a0045 | 709 | Int_t electronics =1;//GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA |
404c1c29 | 710 | AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule); |
0599a018 | 711 | AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse(); |
712 | const char *option=res->ZeroSuppOption(); | |
404c1c29 | 713 | |
50d05d7b | 714 | |
42da2935 | 715 | for( Int_t j=0; j<nofClusters; j++ ){ |
50d05d7b | 716 | // get cluster information |
aacedc3e | 717 | AliITSRawClusterSDD *clusterJ=(AliITSRawClusterSDD*) Cluster(j); |
50d05d7b | 718 | Int_t astart = clusterJ->Astart(); |
719 | Int_t astop = clusterJ->Astop(); | |
720 | Int_t tstart = clusterJ->Tstartf(); | |
721 | Int_t tstop = clusterJ->Tstopf(); | |
722 | Int_t wing = (Int_t)clusterJ->W(); | |
723 | if( wing == 2 ){ | |
724 | astart += fNofAnodes; | |
725 | astop += fNofAnodes; | |
726 | } // end if | |
727 | Int_t xdim = tstop-tstart+3; | |
728 | Int_t zdim = astop-astart+3; | |
d86f531c | 729 | if( xdim > 50 || zdim > 30 ) { |
04366a57 | 730 | Warning("ResolveClusters","xdim: %d , zdim: %d ",xdim,zdim); |
d86f531c | 731 | continue; |
732 | } | |
aacedc3e | 733 | Double_t *sp = new Double_t[ xdim*zdim+1 ]; |
734 | memset( sp, 0, sizeof(Double_t)*(xdim*zdim+1) ); | |
50d05d7b | 735 | |
736 | // make a local map from cluster region | |
737 | for( Int_t ianode=astart; ianode<=astop; ianode++ ){ | |
738 | for( Int_t itime=tstart; itime<=tstop; itime++ ){ | |
0599a018 | 739 | Double_t fadc = Map()->GetSignal( ianode, itime ); |
20f3f947 | 740 | if(!(strstr(option,"ZS"))){ |
0599a018 | 741 | Double_t baseline=GetResp(fModule)->GetBaseline(ianode); |
742 | if( fadc > baseline ) fadc -= (Double_t)baseline; | |
743 | else fadc = 0.; | |
744 | } | |
50d05d7b | 745 | Int_t index = (itime-tstart+1)*zdim+(ianode-astart+1); |
746 | sp[index] = fadc; | |
747 | } // time loop | |
748 | } // anode loop | |
749 | ||
750 | // search peaks on cluster | |
751 | const Int_t kNp = 150; | |
752 | Int_t peakX1[kNp]; | |
753 | Int_t peakZ1[kNp]; | |
aacedc3e | 754 | Double_t peakAmp1[kNp]; |
50d05d7b | 755 | Int_t npeak = SearchPeak(sp,xdim,zdim,peakX1,peakZ1,peakAmp1,fMinPeak); |
756 | ||
757 | // if multiple peaks, split cluster | |
aacedc3e | 758 | if( npeak >= 1 ){ |
50d05d7b | 759 | // cout << "npeak " << npeak << endl; |
760 | // clusterJ->PrintInfo(); | |
aacedc3e | 761 | Double_t *par = new Double_t[npeak*5+1]; |
762 | par[0] = (Double_t)npeak; | |
48058160 | 763 | // Initial parameters in cell dimentions |
50d05d7b | 764 | Int_t k1 = 1; |
765 | for( i=0; i<npeak; i++ ){ | |
766 | par[k1] = peakAmp1[i]; | |
767 | par[k1+1] = peakX1[i]; // local time pos. [timebin] | |
768 | par[k1+2] = peakZ1[i]; // local anode pos. [anodepitch] | |
aacedc3e | 769 | if( electronics == 1 ) par[k1+3] = 2.; // PASCAL |
770 | else if(electronics==2) par[k1+3] = 0.7;//tau [timebin] OLA | |
50d05d7b | 771 | par[k1+4] = .4; // sigma [anodepich] |
aacedc3e | 772 | k1 += 5; |
50d05d7b | 773 | } // end for i |
774 | Int_t niter; | |
aacedc3e | 775 | Double_t chir; |
50d05d7b | 776 | NoLinearFit( xdim, zdim, par, sp, &niter, &chir ); |
aacedc3e | 777 | Double_t peakX[kNp]; |
778 | Double_t peakZ[kNp]; | |
779 | Double_t sigma[kNp]; | |
780 | Double_t tau[kNp]; | |
781 | Double_t peakAmp[kNp]; | |
782 | Double_t integral[kNp]; | |
50d05d7b | 783 | //get integrals => charge for each peak |
784 | PeakFunc( xdim, zdim, par, sp, integral ); | |
785 | k1 = 1; | |
786 | for( i=0; i<npeak; i++ ){ | |
787 | peakAmp[i] = par[k1]; | |
d86f531c | 788 | peakX[i] = par[k1+1]; |
789 | peakZ[i] = par[k1+2]; | |
790 | tau[i] = par[k1+3]; | |
791 | sigma[i] = par[k1+4]; | |
50d05d7b | 792 | k1+=5; |
793 | } // end for i | |
794 | // calculate parameter for new clusters | |
795 | for( i=0; i<npeak; i++ ){ | |
796 | AliITSRawClusterSDD clusterI( *clusterJ ); | |
d86f531c | 797 | |
50d05d7b | 798 | Int_t newAnode = peakZ1[i]-1 + astart; |
d86f531c | 799 | |
800 | // Int_t newiTime = peakX1[i]-1 + tstart; | |
801 | // Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5); | |
802 | // if( newiTime > shift && newiTime < (fMaxNofSamples-shift) ) | |
803 | // shift = 0; | |
aacedc3e | 804 | // Int_t peakpos = Map()->GetHitIndex(newAnode,newiTime+shift ); |
d86f531c | 805 | // clusterI.SetPeakPos( peakpos ); |
806 | ||
50d05d7b | 807 | clusterI.SetPeakAmpl( peakAmp1[i] ); |
aacedc3e | 808 | Double_t newAnodef = peakZ[i] - 0.5 + astart; |
809 | Double_t newiTimef = peakX[i] - 1 + tstart; | |
50d05d7b | 810 | if( wing == 2 ) newAnodef -= fNofAnodes; |
aacedc3e | 811 | Double_t anodePath = (newAnodef - fNofAnodes/2)*anodePitch; |
50d05d7b | 812 | newiTimef *= fTimeStep; |
813 | if( newiTimef > fTimeCorr ) newiTimef -= fTimeCorr; | |
814 | if( electronics == 1 ){ | |
48058160 | 815 | // newiTimef *= 0.999438; // PASCAL |
816 | // newiTimef += (6./fDriftSpeed - newiTimef/3000.); | |
50d05d7b | 817 | }else if( electronics == 2 ) |
818 | newiTimef *= 0.99714; // OLA | |
d86f531c | 819 | |
820 | Int_t timeBin = (Int_t)(newiTimef/fTimeStep+0.5); | |
aacedc3e | 821 | Int_t peakpos = Map()->GetHitIndex( newAnode, timeBin ); |
d86f531c | 822 | if( peakpos < 0 ) { |
823 | for( Int_t ii=0; ii<3; ii++ ) { | |
aacedc3e | 824 | peakpos = Map()->GetHitIndex( newAnode, timeBin+ii ); |
d86f531c | 825 | if( peakpos > 0 ) break; |
aacedc3e | 826 | peakpos = Map()->GetHitIndex( newAnode, timeBin-ii ); |
d86f531c | 827 | if( peakpos > 0 ) break; |
828 | } | |
829 | } | |
830 | ||
831 | if( peakpos < 0 ) { | |
04366a57 | 832 | //Warning("ResolveClusters", |
aacedc3e | 833 | // "Digit not found for cluster"); |
f77f13c8 | 834 | //if(AliDebugLevel()>=3) clusterI.PrintInfo(); |
d86f531c | 835 | continue; |
836 | } | |
404c1c29 | 837 | clusterI.SetPeakPos( peakpos ); |
4952f440 | 838 | Float_t dp = cal->GetDriftPath(newiTimef,newAnodef); |
c9a38d3d | 839 | Float_t driftPath = fSddLength - (Double_t)dp; |
840 | Float_t sign = ( wing == 1 ) ? -1. : 1.; | |
841 | Float_t xcoord = driftPath*sign * 0.0001; | |
842 | Float_t zcoord = anodePath * 0.0001; | |
843 | Float_t corrx=0, corrz=0; | |
844 | cal->GetCorrections(zcoord,xcoord,corrz,corrx,GetSeg()); | |
845 | xcoord+=corrx; | |
846 | zcoord+=corrz; | |
404c1c29 | 847 | clusterI.SetX( xcoord ); |
848 | clusterI.SetZ( zcoord ); | |
50d05d7b | 849 | clusterI.SetAnode( newAnodef ); |
850 | clusterI.SetTime( newiTimef ); | |
851 | clusterI.SetAsigma( sigma[i]*anodePitch ); | |
852 | clusterI.SetTsigma( tau[i]*fTimeStep ); | |
853 | clusterI.SetQ( integral[i] ); | |
d86f531c | 854 | |
7d62fb64 | 855 | fDetTypeRec->AddCluster( 1, &clusterI ); |
50d05d7b | 856 | } // end for i |
aacedc3e | 857 | Clusters()->RemoveAt( j ); |
50d05d7b | 858 | delete [] par; |
48058160 | 859 | } else { // something odd |
04366a57 | 860 | Warning( "ResolveClusters", |
aacedc3e | 861 | "--- Peak not found!!!! minpeak=%d ,cluster peak= %f" |
862 | " , module= %d", | |
863 | fMinPeak, clusterJ->PeakAmpl(),GetModule()); | |
d86f531c | 864 | clusterJ->PrintInfo(); |
04366a57 | 865 | Warning( "ResolveClusters"," xdim= %d zdim= %d", xdim-2, zdim-2 ); |
50d05d7b | 866 | } |
867 | delete [] sp; | |
42da2935 | 868 | } // cluster loop |
aacedc3e | 869 | Clusters()->Compress(); |
870 | // Map()->ClearMap(); | |
a1f090e0 | 871 | } |
42da2935 | 872 | //________________________________________________________________________ |
873 | void AliITSClusterFinderSDD::GroupClusters(){ | |
874 | // group clusters | |
875 | Int_t dummy=0; | |
aacedc3e | 876 | Double_t fTimeStep = GetSeg()->Dpx(dummy); |
42da2935 | 877 | // get number of clusters for this module |
aacedc3e | 878 | Int_t nofClusters = NClusters(); |
42da2935 | 879 | nofClusters -= fNclusters; |
880 | AliITSRawClusterSDD *clusterI; | |
881 | AliITSRawClusterSDD *clusterJ; | |
882 | Int_t *label = new Int_t [nofClusters]; | |
883 | Int_t i,j; | |
884 | for(i=0; i<nofClusters; i++) label[i] = 0; | |
885 | for(i=0; i<nofClusters; i++) { | |
50d05d7b | 886 | if(label[i] != 0) continue; |
887 | for(j=i+1; j<nofClusters; j++) { | |
888 | if(label[j] != 0) continue; | |
aacedc3e | 889 | clusterI = (AliITSRawClusterSDD*) Cluster(i); |
890 | clusterJ = (AliITSRawClusterSDD*) Cluster(j); | |
50d05d7b | 891 | // 1.3 good |
892 | if(clusterI->T() < fTimeStep*60) fDAnode = 4.2; // TB 3.2 | |
893 | if(clusterI->T() < fTimeStep*10) fDAnode = 1.5; // TB 1. | |
894 | Bool_t pair = clusterI->Brother(clusterJ,fDAnode,fDTime); | |
895 | if(!pair) continue; | |
f77f13c8 | 896 | if(AliDebugLevel()>=4){ |
aacedc3e | 897 | clusterI->PrintInfo(); |
898 | clusterJ->PrintInfo(); | |
f77f13c8 | 899 | } // end if AliDebugLevel |
50d05d7b | 900 | clusterI->Add(clusterJ); |
901 | label[j] = 1; | |
aacedc3e | 902 | Clusters()->RemoveAt(j); |
50d05d7b | 903 | j=i; // <- Ernesto |
904 | } // J clusters | |
905 | label[i] = 1; | |
42da2935 | 906 | } // I clusters |
aacedc3e | 907 | Clusters()->Compress(); |
42da2935 | 908 | |
909 | delete [] label; | |
910 | return; | |
b0f5e3fc | 911 | } |
42da2935 | 912 | //________________________________________________________________________ |
913 | void AliITSClusterFinderSDD::SelectClusters(){ | |
914 | // get number of clusters for this module | |
aacedc3e | 915 | Int_t nofClusters = NClusters(); |
b0f5e3fc | 916 | |
42da2935 | 917 | nofClusters -= fNclusters; |
918 | Int_t i; | |
919 | for(i=0; i<nofClusters; i++) { | |
aacedc3e | 920 | AliITSRawClusterSDD *clusterI =(AliITSRawClusterSDD*) Cluster(i); |
50d05d7b | 921 | Int_t rmflg = 0; |
aacedc3e | 922 | Double_t wy = 0.; |
50d05d7b | 923 | if(clusterI->Anodes() != 0.) { |
aacedc3e | 924 | wy = ((Double_t) clusterI->Samples())/clusterI->Anodes(); |
50d05d7b | 925 | } // end if |
926 | Int_t amp = (Int_t) clusterI->PeakAmpl(); | |
927 | Int_t cha = (Int_t) clusterI->Q(); | |
928 | if(amp < fMinPeak) rmflg = 1; | |
929 | if(cha < fMinCharge) rmflg = 1; | |
930 | if(wy < fMinNCells) rmflg = 1; | |
931 | //if(wy > fMaxNCells) rmflg = 1; | |
aacedc3e | 932 | if(rmflg) Clusters()->RemoveAt(i); |
42da2935 | 933 | } // I clusters |
aacedc3e | 934 | Clusters()->Compress(); |
42da2935 | 935 | return; |
b0f5e3fc | 936 | } |
42da2935 | 937 | |
42da2935 | 938 | //______________________________________________________________________ |
4952f440 | 939 | void AliITSClusterFinderSDD::GetRecPoints(AliITSCalibrationSDD* cal){ |
42da2935 | 940 | // get rec points |
04366a57 | 941 | |
42da2935 | 942 | // get number of clusters for this module |
aacedc3e | 943 | Int_t nofClusters = NClusters(); |
42da2935 | 944 | nofClusters -= fNclusters; |
aacedc3e | 945 | const Double_t kconvGeV = 1.e-6; // GeV -> KeV |
946 | const Double_t kconv = 1.0e-4; | |
4952f440 | 947 | const Double_t kcmToMicrons = 10000.; |
aacedc3e | 948 | const Double_t kRMSx = 38.0*kconv; // microns->cm ITS TDR Table 1.3 |
949 | const Double_t kRMSz = 28.0*kconv; // microns->cm ITS TDR Table 1.3 | |
4952f440 | 950 | Int_t nAnodes=GetSeg()->NpzHalf(); |
d86f531c | 951 | Int_t i; |
42da2935 | 952 | Int_t ix, iz, idx=-1; |
953 | AliITSdigitSDD *dig=0; | |
aacedc3e | 954 | Int_t ndigits=NDigits(); |
00a7cc50 | 955 | |
956 | Int_t lay,lad,det; | |
957 | fDetTypeRec->GetITSgeom()->GetModuleId(fModule,lay,lad,det); | |
958 | Int_t ind=(lad-1)*fDetTypeRec->GetITSgeom()->GetNdetectors(lay)+(det-1); | |
959 | Int_t lyr=(lay-1); | |
960 | ||
961 | ||
42da2935 | 962 | for(i=0; i<nofClusters; i++) { |
aacedc3e | 963 | AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*)Cluster(i); |
50d05d7b | 964 | if(!clusterI) Error("SDD: GetRecPoints","i clusterI ",i,clusterI); |
965 | if(clusterI) idx=clusterI->PeakPos(); | |
966 | if(idx>ndigits) Error("SDD: GetRecPoints","idx ndigits",idx,ndigits); | |
967 | // try peak neighbours - to be done | |
aacedc3e | 968 | if(idx&&idx<= ndigits) dig =(AliITSdigitSDD*)GetDigit(idx); |
d86f531c | 969 | if(!dig) { |
50d05d7b | 970 | // try cog |
4952f440 | 971 | Float_t xMicrons=clusterI->X()*kcmToMicrons; |
972 | Float_t zMicrons=clusterI->Z()*kcmToMicrons; | |
973 | Float_t zAnode=zMicrons/GetSeg()->Dpz(0)+nAnodes/2; | |
974 | Float_t driftSpeed=cal->GetDriftSpeedAtAnode(zAnode); | |
975 | Float_t driftPath=GetSeg()->Dx()-TMath::Abs(xMicrons); | |
976 | ix=1+(Int_t)(driftPath/driftSpeed/GetSeg()->Dpx(0)); | |
977 | iz=1+(Int_t)zAnode; | |
978 | if(xMicrons>0) iz+=nAnodes; | |
aacedc3e | 979 | dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix-1); |
50d05d7b | 980 | // if null try neighbours |
aacedc3e | 981 | if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix); |
982 | if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix+1); | |
50d05d7b | 983 | if (!dig) printf("SDD: cannot assign the track number!\n"); |
984 | } // end if !dig | |
75fb37cc | 985 | |
986 | Int_t lab[4] = {-3141593,-3141593,-3141593,ind}; | |
987 | if (dig) { | |
988 | lab[0] = dig->GetTrack(0); | |
989 | lab[1] = dig->GetTrack(1); | |
990 | lab[2] = dig->GetTrack(2); | |
991 | } | |
992 | Float_t hit[5] = {clusterI->X(),clusterI->Z(),kRMSx*kRMSx,kRMSz*kRMSz,clusterI->Q()}; | |
993 | Int_t info[3] = {0,0,lyr}; | |
994 | ||
995 | AliITSRecPoint rnew(lab,hit,info,kTRUE); | |
50d05d7b | 996 | rnew.SetdEdX(kconvGeV*clusterI->Q()); |
d86f531c | 997 | |
7d62fb64 | 998 | fDetTypeRec->AddRecPoint(rnew); |
42da2935 | 999 | } // I clusters |
aacedc3e | 1000 | // Map()->ClearMap(); |
b0f5e3fc | 1001 | } |
42da2935 | 1002 | //______________________________________________________________________ |
1003 | void AliITSClusterFinderSDD::FindRawClusters(Int_t mod){ | |
1004 | // find raw clusters | |
50d05d7b | 1005 | |
aacedc3e | 1006 | SetModule(mod); |
f45f6658 | 1007 | SetCutAmplitude(mod); |
4952f440 | 1008 | AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(mod); |
f45f6658 | 1009 | Int_t nanodes=GetSeg()->Npz(); |
1010 | Int_t noise=0; | |
1011 | for(Int_t i=0;i<nanodes;i++){ | |
4952f440 | 1012 | noise+=(Int_t)cal->GetNoiseAfterElectronics(i); |
f45f6658 | 1013 | } |
1014 | SetMinPeak((noise/nanodes)*5); | |
a1f090e0 | 1015 | Find1DClustersE(); |
b0f5e3fc | 1016 | GroupClusters(); |
1017 | SelectClusters(); | |
04366a57 | 1018 | ResolveClusters(); |
4952f440 | 1019 | GetRecPoints(cal); |
b0f5e3fc | 1020 | } |
42da2935 | 1021 | //_______________________________________________________________________ |
d2f55a22 | 1022 | void AliITSClusterFinderSDD::PrintStatus() const{ |
42da2935 | 1023 | // Print SDD cluster finder Parameters |
1024 | ||
1025 | cout << "**************************************************" << endl; | |
1026 | cout << " Silicon Drift Detector Cluster Finder Parameters " << endl; | |
1027 | cout << "**************************************************" << endl; | |
1028 | cout << "Number of Clusters: " << fNclusters << endl; | |
1029 | cout << "Anode Tolerance: " << fDAnode << endl; | |
1030 | cout << "Time Tolerance: " << fDTime << endl; | |
1031 | cout << "Time correction (electronics): " << fTimeCorr << endl; | |
f45f6658 | 1032 | cout << "Cut Amplitude (threshold): " << fCutAmplitude[0] << endl; |
42da2935 | 1033 | cout << "Minimum Amplitude: " << fMinPeak << endl; |
1034 | cout << "Minimum Charge: " << fMinCharge << endl; | |
1035 | cout << "Minimum number of cells/clusters: " << fMinNCells << endl; | |
1036 | cout << "Maximum number of cells/clusters: " << fMaxNCells << endl; | |
1037 | cout << "**************************************************" << endl; | |
a1f090e0 | 1038 | } |
404c1c29 | 1039 | |
404c1c29 | 1040 |